US3183264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of unsaturated phosphonic acid dichlorides
Assignee: Hoechst AG
•
Filing: 1960-06-17
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Granted: 1965-05-11
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Expires: 1980-06-17
Abstract
No abstract record available.
Inventors
- 👤 Rochlitz Fritz
- 👤 Vilcsek Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/42; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
63 words
A PROCESS FOR PREPARING ALKENE PHOSPHONIC ACID DICHLORIDES WHICH CONSISTS ESSENTIALLY OF HEATING A B-HALO ALKANE PHOSPHONIC ACID DICHLORIDE HAVING 2 TO 8 CARBON ATINS ABD SELECTED FROM THE GROUP CONSISTING OF CHLOROALKANE PHOSPHONIC ACID DICHLORIDES AND BROMO-ALKANE PHOSPHONIC ACID DICHLORIDES AT TEMPERATURES OF FROM 60* C. TO 300*C., AND THEN ISOLATING THE ALKENE PHOSPHONIC ACID DICHLORID FORMED FROM THE RESULTING REACTION MIXTURE.
Claim 2
Dependent Claim
63 words
A PROCESS FOR PREPARING ALKENE PHOSPHONIC ACID DICHLORIDES WHICH CONSISTS ESSENTIALLY OF HEATING A B-HALO ALKANE PHOSPHONIC ACID DICHLORIDE HAVING 2 TO 8 CARBON ATINS ABD SELECTED FROM THE GROUP CONSISTING OF CHLOROALKANE PHOSPHONIC ACID DICHLORIDES AND BROMO-ALKANE PHOSPHONIC ACID DICHLORIDES AT TEMPERATURES OF FROM 60* C. TO 300*C., AND THEN ISOLATING THE ALKENE PHOSPHONIC ACID DICHLORID FORMED FROM THE RESULTING REACTION MIXTURE.
Claim 3
Dependent Claim
52 words
A PROCESS FOR PREPARING PROPENE PHOSPHONIC ACID DICHLORIDE WHICH CONSISTS ESSENTIALLY OF HEATING CHLOROPROPANE PHOSPHONIC ACID DICHLORIDE AT 200* C. UNDER A BLANKET OF NITROGEN, ABSORBING THE ESCAPING VAPORS OF HYDROGEN CHLORIDE IN A SODIUM HYDROXIDE SOLUTION, AND ISOLATING THE PROPENE PHOSPHONIC ACID DICHLORIDE FORMED FROM THE REMAINING RECATION MIXTURE BY DISTILLATION.
Claim 4
Dependent Claim
52 words
A PROCESS FOR PREPARING PROPENE PHOSPHONIC ACID DICHLORIDE WHICH CONSISTS ESSENTIALLY OF HEATING CHLOROPROPANE PHOSPHONIC ACID DICHLORIDE AT 200* C. UNDER A BLANKET OF NITROGEN, ABSORBING THE ESCAPING VAPORS OF HYDROGEN CHLORIDE IN A SODIUM HYDROXIDE SOLUTION, AND ISOLATING THE PROPENE PHOSPHONIC ACID DICHLORIDE FORMED FROM THE REMAINING RECATION MIXTURE BY DISTILLATION.
References Cited (Backward Citations)
US2388657A
Cited
US2495799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |